Jason Samples

Little-known facts about mercury dimes and what the mercury dime is worth these days.

One of the most rare and well-known coins in all of U.S. history is the 1933 Saint Gaudens Double Eagle -- a $20 gold coin that, by several accounts, shouldn't even be in existance.

See how U.S. coins have been made throughout the years... including details about early U.S. Mints compared to modern day U.S. Mint facilities.

How to find the grade of your U.S. pennies. Learn how to determine the exact grades for circulated small cents -- Lincoln cents and Indian Head pennies.

Grading U.S. Nickels: How to determine the grade (condition) of circulated nickels -- Jefferson nickels, Liberty Head nickels (V nickels), Buffalo nickels.

Grading U.S. Dimes: Here's how to determine the grade (condition) of your circulated dimes -- Roosevelt dimes, Mercury dimes, and Barber dimes.

Grading Half Dollars: How to determine the grade (condition) of your circulated U.S. half dollars -- Kennedy, Franklin, Walking Liberty, and Barber halves.

Grading U.S. Quarters: How to determine the grade (condition) of circulated quarters -- Washington quarters, Standing Liberty quarters, Barber quarters.

Modern commemorative coins were first issued by the U.S. Mint in 1982. Although these coins are legal tender, they are not minted for general circulation. Each commemorative coin is produced by the U.S. Mint in limited quantity and is only available for a limited time. See how much modern commemorative coins are worth.